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Finding the Fourth Proportional to 978,073.16, 1,349,871.01 and 570,183.08

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Solution

The fourth proportional to 978,073.16, 1,349,871.01 and 570,183.08 is: 786,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,073.16 : 1,349,871.01 = 570,183.08 : x
  2. Step 2: Convert to fraction form
    978,073.16/1,349,871.01 = 570,183.08/x
  3. Step 3: Cross multiply
    978,073.16x = 1,349,871.01 × 570,183.08
  4. Step 4: Simplify right side
    978,073.16x = 769,673,601,909.70
  5. Step 5: Solve for x
    x = 769,673,601,909.70/978,073.16
  6. Step 6: Final answer
    x = 786,928.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.